<!DOCTYPE html>
<html>
    <head>
        <title>jQuery Knob demo</title>
        <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.0/jquery.min.js"></script>
        <script src="js/jquery.knob.js"></script>
        <script src="js/jquery.jqcanvas.js"></script>
        <script>
            $(function() {

                $(".knob").knob({
                    /*change : function (value) {
                        //console.log("change : " + value);
                    },
                    release : function (value) {
                        console.log("release : " + value);
                    },
                    cancel : function () {
                        console.log("cancel : " + this.value);
                    },*/
                    draw : function () {

                        // "tron" case
                        if(this.$.data('skin') == 'tron') {

                            var a = this.angle(this.cv)  // Angle
                                , sa = this.startAngle          // Previous start angle
                                , sat = this.startAngle         // Start angle
                                , ea                            // Previous end angle
                                , eat = sat + a                 // End angle
                                , r = 1;

                            this.g.lineWidth = this.lineWidth;

                            this.o.cursor
                                && (sat = eat - 0.3)
                                && (eat = eat + 0.3);

                            if (this.o.displayPrevious) {
                                ea = this.startAngle + this.angle(this.v);
                                this.o.cursor
                                    && (sa = ea - 0.3)
                                    && (ea = ea + 0.3);
                                this.g.beginPath();
                                this.g.strokeStyle = this.pColor;
                                this.g.arc(this.xy, this.xy, this.radius - this.lineWidth, sa, ea, false);
                                this.g.stroke();
                            }

                            this.g.beginPath();
                            this.g.strokeStyle = r ? this.o.fgColor : this.fgColor ;
                            this.g.arc(this.xy, this.xy, this.radius - this.lineWidth, sat, eat, false);
                            this.g.stroke();

                            this.g.lineWidth = 2;
                            this.g.beginPath();
                            this.g.strokeStyle = this.o.fgColor;
                            this.g.arc( this.xy, this.xy, this.radius - this.lineWidth + 1 + this.lineWidth * 2 / 3, 0, 2 * Math.PI, false);
                            this.g.stroke();

                            return false;
                        }
                    }
                });

                // Example of infinite knob, iPod click wheel
                var v, up=0,down=0,i=0
                    ,$idir = $("div.idir")
                    ,$ival = $("div.ival")
                    ,incr = function() { i++; $idir.show().html("+").fadeOut(); $ival.html(i); }
                    ,decr = function() { i--; $idir.show().html("-").fadeOut(); $ival.html(i); };
                $("input.infinite").knob(
                                    {
                                    min : 0
                                    , max : 20
                                    , stopper : false
                                    , change : function () {
                                                    if(v > this.cv){
                                                        if(up){
                                                            decr();
                                                            up=0;
                                                        }else{up=1;down=0;}
                                                    } else {
                                                        if(v < this.cv){
                                                            if(down){
                                                                incr();
                                                                down=0;
                                                            }else{down=1;up=0;}
                                                        }
                                                    }
                                                    v = this.cv;
                                                }
                                    });
            });
        </script>
        <style>
            body{
              padding: 0;
              margin: 0px 50px;
              font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
              font-weight: 300;
              text-rendering: optimizelegibility;
            }
            p{font-size: 30px; line-height: 30px}
            div.demo{text-align: center; width: 280px; float: left}
            div.demo > p{font-size: 20px}
        </style>
    </head>
    <body>
        <div style="width:100%;font-size:40px;letter-spacing:-8px;line-height:40px;">
            <h1>jQuery Knob</h1>
        </div>
        <div>
            <p>Nice, downward compatible, touchable, jQuery dial. <a href="http://flattr.com/thing/674900/jQuery-Knob" target="_blank"><img src="http://api.flattr.com/button/flattr-badge-large.png" alt="Flattr this" title="Flattr this" border="0" /></a></p>
            <p style="font-size: 20px">* implemented interactions : mouse click and wheel mouse, keyboard (on focus) and fingers (touch events)</p>
        </div>
        <div class="demo">
            <p>&#215; Disable display input</p>
            <pre>
data-width="100"
data-displayInput=false
            </pre>
            <input class="knob" data-width="100" data-displayInput=false value="35">
        </div>
        <div class="demo">
            <p>&#215; 'cursor' mode</p>
            <pre>
data-width="150"
data-cursor=true
data-thickness=.3
data-fgColor="#222222"
            </pre>
            <input class="knob" data-width="150" data-cursor=true data-fgColor="#222222" data-thickness=.3 value="29">
        </div>
        <div class="demo" >
            <p>&#215; Display previous value</p>
            <pre>
data-displayPrevious=true
data-min="-100"
            </pre>
            <input class="knob" data-width="200" data-min="-100" data-displayPrevious=true value="44">
        </div>
        <div style="clear:both"></div>
        <div class="demo">
            <p>&#215; Angle offset</p>
            <pre>
data-angleOffset=90
            </pre>
            <input class="knob" data-angleOffset=90 value="35">
        </div>
        <div class="demo">
            <p>&#215; Angle offset and arc</p>
            <pre>
data-fgColor="#66CC66"
data-angleOffset=-125
data-angleArc=250
            </pre>
            <input class="knob" data-angleOffset=-125 data-angleArc=250 data-fgColor="#66EE66" value="35">
        </div>
        <div class="demo" >
            <p>&#215; 5-digit values</p>
            <pre>
data-min="-15000"
data-max="15000"
            </pre>
            <input class="knob" data-min="-15000" data-max="15000" value="-11000">
        </div>
        <div style="clear:both"></div>
        <div style="text-align: center">
            <p style="font-size: 20px">&#215; Overloaded 'draw' method</p>
        </div>
        <div style="background-color: #222; height: 340px">
            <div class="demo" style="background-color:#222; color:#FFF;">
                <pre>
    data-width="75"
    data-fgColor="#ffec03"
    data-skin="tron"
    data-thickness=".2"
    data-displayPrevious=true
                </pre>
                <input class="knob" data-width="75" data-displayPrevious=true data-fgColor="#ffec03" data-skin="tron" data-cursor=true value="75" data-thickness=".2">
            </div>
            <div class="demo" style="background-color:#222; color:#FFF;">
                <pre>
    data-width="150"
    data-fgColor="#ffec03"
    data-skin="tron"
    data-thickness=".2"
    data-displayPrevious=true
                </pre>
                <input class="knob" data-width="150" data-displayPrevious=true data-fgColor="#ffec03" data-skin="tron" data-thickness=".2" value="75">
            </div>
            <div class="demo" style="background-color:#222; color:#FFF;">
                <pre>
    data-width="150"
    data-fgColor="#C0ffff"
    data-skin="tron"
    data-thickness=".1"
    data-angleOffset="180"
                </pre>
                <input class="knob" data-width="150" data-angleOffset="180" data-fgColor="#C0ffff" data-skin="tron" data-thickness=".1" value="35">
            </div>
        </div>
        <div style="clear:both"></div>
        <div class="demo">
            <p>&#215; Readonly</p>
            <pre>
data-thickness=".4"
data-fgColor="chartreuse"
data-readOnly=true
            </pre>
            <input class="knob" data-fgColor="chartreuse" data-thickness=".4" data-readOnly=true value="22">
        </div>
        <div class="demo">
            <p>&#215; Dynamic</p>
            <pre>
data-width="200"
            </pre>
            <input type="button" onclick="$('.knob-dyn').knob();" value="knobify!">
            <input type="text" class="knob-dyn" data-width="200" data-cursor=true value="56">
            <pre>
data-width="50"
data-cursor=true
            </pre>
            <input type="button" onclick="$('.knob-dyn2').knob();" value="knobify!">
            <input type="text" class="knob-dyn2" data-width="50" data-thickness=".4" value="56">
        </div>
        <div class="demo" style="height:440px;width:300px">
            <p>&#215; Infinite || iPod click wheel</p>
            <div style="float:left;width:180px;height:320px;padding:20px;background-color:#EEEEEE;text-align:center;">
                <pre>
data-width="150"
data-cursor=true
data-thickness=".5"
data-fgColor="#AAAAAA"
data-bgColor="#FFFFFF"
data-displayInput="false"
+ some code
                </pre>
                <input class="infinite" data-width="150" data-thickness=".5" data-fgColor="#AAAAAA" data-bgColor="#FFFFFF" data-displayInput="false" data-cursor=true>
            </div>
            <div style="float:left;margin-top:200px;">
                <div class="ival" style="width:80px;text-align:center;font-size:50px;color:#AAA">0</div>
                <div class="idir" style="width:80px;text-align:center;font-size:50px;"></div>
            </div>
        </div>
        <div style="clear:both"></div>
        <div id="big" class="demo" style="height:800px;width:100%">
            <p>&#215; Big !</p>
            <pre>
data-width="700"
            </pre>
            <input class="knob" data-min="-100" data-max="100" data-width="700" data-height="700" data-thickness=".3" data-cursor=true>
        </div>
        <div style="clear:both"></div>
        <div style="padding:30px; margin-top:30px;">
            <p style="font-size:20px;">jQuery Knob is &copy; 2012 Anthony Terrien and dual licensed under the MIT or GPL licenses.</p>
        </div>
        <div style="border: 0 none; position: absolute; right: 0; top: 0;"><a href="https://github.com/aterrien" target="_blank"><img src="../i/github-ribbon.png" style="border: 0 none;"></a></div>
        <script type="text/javascript">
            var _gaq = _gaq || [];
            _gaq.push(['_setAccount', 'UA-3008949-6']);
            _gaq.push(['_trackPageview']);
        </script>
        <script type="text/javascript">
            (function() {
                    var ga = document.createElement('script');
                    ga.type = 'text/javascript';
                    ga.async = true;
                    ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
                    (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(ga);
            })();
        </script>
    </body>
</html>